Plumber&#39;s torch



Dec. 11, 1923;

' w. F. PAGEL PLUMBERS'TORCH Filed Nov. 29. 1922 Patented Dec. 11, "1923.

UNITED STATES PATENT, oFFrcE:

WILLIAM F. PAGEL, or s'Yc'AMonE, ILmivois'.

renames Application filed November 2'0, 1922. Serial Nb. 602,025).

T 0 all whom it may concern:

.Be it known that I, Trillium F. Risen, a citizenof the United States, and residentof Sycamore, .in the. county of De Kalb and State of lllinois, have invented certain new and useful Improvements in a Plumbers Torch, of which the followingis a specification. v

My invention relates to, an. improvement in so-called plumbers torches and has special reference to an improvement. in the fuelfeed means of such torches.

The object of my invention is to; transmit sufficient heat from the burner to the fuel as it is fed from the reservoir to the burner to prevent any but vaporized or gasified fuel being projected into the burner tube through the fuel feeduorifice even when lower grade fuel such as kerosene is used.

A further object of my inrtentionwis to prevent the surging .or intermittent. ejecr tionof fuel in liquid form through the exit opening and also to preventanylreturn. of hot gases or fuel into. the reservoir through the fuel feed passages. p My invention will be morereadilyunderstood by, reference to the accompanying drawings forming part of thisispecification", and in which: Figure 1 is a fragmentary sidee'levat'ion of a plumbers torch shown partly insection and made in, accordance with my invention; and a Figure 2 is a, similar sectional view of the burner tube and associated feed passages showing a slight modification of. my invention. i .In. said drawings, 1 is a. fuel reservoir similar to the usual form ofreservoirsof plumbers torches. Up'on the top ofthe reservoir is a removable member Qcarrying. a handle 3 and a pump 4. Suitable means are provided for feeding the-fuel from. the reservoir 1 into the member 2 and I provided fuel delivery pipe 5extending from the ineTmher 2 and curved upwardly-,- and uponthe up; per end ofwhich, is secureda burner. member 6. The burner 6 comprises aburnertu-be'l arranged substantially: horizontally and; be? low which is' provided a 'fuel feed. passage 8connecting at. one end: with. arVGIlllCalIOPQIL-z ing 9 infithe lower part ofthe burnerand in the lowerend ofwhich passage the.upper end of the tube 7 is sealediLT-heffeedpass sage 8 connects with suitable passages in a member 10 earryimqfsuitable adjustable valves ll andl2 and .by which the fuelris directedthrougha nozzle l3taxially of the burner tube 7. Theburner 6 is usually made of brass. l c.

In use, air pressure is applied to the reservoir liabove the liquid fuel therein by means of the pump. l and the fuel is, forced up through the delivery pipe 5 tothe feed passaQgeS. but I donot desire to permitthefuel in liquid formto enter the passage 8 forthie reason that if. it. does, it will be ejected in liquid form through the nozzle 13 asenough heat is not transmitted tothe. fuel through the burner casting. while the fuel is flowing through thepassage 8 to vaporize thep'resentdaylow grade fuel; "lloprevent. thefuel in liquid lforuiij enterthe passage 8, Lprovide-a vaporizer in the form. of a tapered pl'ugor projection 14 arranged centrally within the gpa'ssage il and having; its smaller endl5gprojecting down. into the upper end ofthe said feed tube 5.- The base of the cone is at the upper end and is seated upona shoulder 16in. the burner casting. The upper. part 170f this member is cylindrical andeXternally-thre'aded to fittightly within-la threaded opening 18provided iIi the lowerwallgof the burner casting.- The extreme upper end-1990f this member extends into the; burner tube 7;and being arranged substantiall-y at';the middle pointthereot is pi'oje'cted into the path-of the flame in the burner tube andinposition to take up heat therefromi x v The burner tube. 7 is' pr'ovid'ed with a cir cumferential enlargement 7 '-atit's middle portion-which forms more or less of a chamber defined at its e'nds by circumferential shoulders 7", and the upper end l9rof the vaporizer. plug extends. into. this chamber sub'stantially midway between .said shoul ders; The chamber 7 ipermit s expansion of the burning gaseslwhich serves to retard somewhat their progress through theburne'r tube and: assists inithe mixing ofi th'e fuel and: air and the production of a'high. temperature, at this point to which tlieupper endof the plugv is exposed on =accountof it projecting into this chamber: 7 I'mikethe vaporii'z'in'g plug-of suitable metal such. as copper; 3 or an alloy'o'f alumi num and copper, which; is-highly conduc-I tive of heat. -flihe action of this member} is as: follows. The liquidt'ri si ng within the" tubei 5: first comes int'oiqontac't'w itlr the smaller end 15 6f: the heatingplug an-d thi's plug being hot the contact ,of the fuel with the lower end thereof tends to immediately vaporize the fuel. If the fuel flows fast enough to cool the lower end or tip of the plug it rises into contact with more and more of same whereby more and more heat is transmitted to the fuel. The peculiar shape of the plug, that is, having a broad base and a small point serves to proportion the transmission of heat to the rising fluid fuel as the further the fuel rises the larger its contact with the heating projection and consequently more heat is transmitted to the fuel.

. 'As no fuel in liquid form is allowed to enter the passage 8 there is no tendency to drive hot fuel either in liquid or gaseous form back into the reservoir as the gasified fuel has free outlet through the nozzle 13 and' immediately any pressure is produced the rising fuel is driven back out of contact With the vaporizing plug and when this occurs" the pressure does not increase further. The projecting end 19 of the vaporizing plug 15 serves as a baffle against which the flame is projected. In Figure 2, I have shown a form of vaporizing plug which is provided 'with a similar coned lower end 15 but inkerosenes, the form shown in Figure 1 1s preferable.

As many modifications of my invention will readily suggest themselves to one skilled in. the art, I do not limit or confine my invention to the specific details of construction herein shown and described.

I claim:

1. In a torch of the kind described, a burner tube, a reservoir from which fuel is adapted to be fed to the burner by pressure,

a passage through which the fuel is fed, a member of high heat-conductive material metallically connected to the" wall of the burner tube and having an end projecting into saidpassage and arranged to cause the fuel as it flows to the burner to first contact with the free end of said member.

2. .In a torch of the kind described, a burner tube, a reservoir from which fuel is adapted to be fed to the burner by pressure, a passage through which the fuel rises to the burner, a member of high heat-conduc tive material rigidlysecured to in free heat conducting relation the wall of the burner and projecting down into said passage and adapted to conduct heat to the fuel as it rises in said passage to flow to the burner.

33. In a torch of the kind described, a burner tube, a reservoir from which fuel is I adapted to be fed to the burner by pressure,

a passage through which the fuel rises to the burner, a tapered member of high heat conductivity nietallically and rigidly mount ed at its base in the Wall of the burner and having its free smaller end projecting downwardly into said passage and adapted to conduct heat to the fuel as it rises in said passage to flow to the burner.

4:. In a torch of the kind described, a burner tube, a reservoir from which fuel is adapted to be fed to the burner by pressure, a passage through which the-fuel rises to the burner, a metallic member rigidly mounted in the wall of the burner, for receiving heat from the wall of the burner tube and conducting it to the fuel as the fuel rises through said passage to flow to burner tube, a reservoir from which fuel isadapted to be fed to the burner by pressure,

a passage through which the fuel rises from the reservoir to the burner, a baffle in the burner tube between its ends, a metallic member rigidly mounted in, the wall of the burner adjacent to said battle for absorbing heat therefrom, the said member being tapered and its free smaller end extending down into the passage through which the fuel rises to the burner and adapted to heat the fuel as it flows through said passage. i

6. In a torch of the kind described, a

burner tube, a reservoir from which fuel is adapted to'be fed to the burner by pressure, a passage through which the fuel rises to the burner, a member of high heat-conductive material mounted in the wall of the burner, the base of the member projecting into the burner tube and forming a: baffle adapted to project into the flame. in the burner tube and absorb heat therefrom, the member being sealed into the wall of the burner tube and having a taperedendprojecting down into said passage to heat the fuel as it flows through the passage to the burner. f

7. In a liquid fuel burning device of the kind described, having a passage through which liquid fuel rises on its way to the burner, a tapered heat conducting projection extending downwardly and freely into said passage, the projection at its large-r end metallically connected to the wall of the burner for receiving heat therefrom.

Signed at Chicago,-Illinois, this 7th dav 

